package com.dream21th.admin.service.impl;

import com.dream21th.admin.dao.SysCaptchaDao;
import com.dream21th.admin.entity.SysCaptchaEntity;
import com.dream21th.admin.service.SysCaptchaService;
import com.dream21th.admin.utils.DateUtils;
import com.dream21th.admin.utils.RedisUtils;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.google.code.kaptcha.Producer;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.awt.image.BufferedImage;
import java.util.Date;


@Service("sysCaptchaService")
public class SysCaptchaServiceImpl extends ServiceImpl<SysCaptchaDao, SysCaptchaEntity> implements SysCaptchaService {

    private static final Long EXPIRE_TIME=5*60L;

    @Autowired
    private Producer producer;

    @Autowired
    private RedisUtils redisUtils;

    @Override
    public BufferedImage getCaptcha(String uuid) {
        if(StringUtils.isBlank(uuid)){
            throw new RuntimeException("uuid不能为空");
        }
        //生成文字验证码
        String code = producer.createText();

        SysCaptchaEntity captchaEntity = new SysCaptchaEntity();
        captchaEntity.setUuid(uuid);
        captchaEntity.setCode(code);
        //5分钟后过期
        captchaEntity.setExpireTime(DateUtils.addDateMinutes(new Date(), 5));
        this.save(captchaEntity);
        redisUtils.set(uuid,code,EXPIRE_TIME);
        return producer.createImage(code);
    }

    @Override
    public boolean validate(String uuid, String code) {
        SysCaptchaEntity captchaEntity = this.getOne(new QueryWrapper<SysCaptchaEntity>().eq("uuid", uuid));
        if(captchaEntity == null){
            return false;
        }

        //删除验证码
        this.removeById(uuid);

        if(captchaEntity.getCode().equalsIgnoreCase(code) && captchaEntity.getExpireTime().getTime() >= System.currentTimeMillis()){
            return true;
        }

        return false;
    }
}
